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[20080826]
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Journaling performance (Updated)
Mathias Scheler has an interesting
blog posting
about the difference of using journaling on
file system performance. The test he did was extracting NetBSD 4.0
sources.
- With plain FFS, the extract took 15:19 minutes
- With journaling, it took 3:24 minutes.
A clear winner. (No numbers with soft dependencies, though,
but they can be expected to be comparable to the journaling
number).
Update:
Matthias has
posted
updated numbers that include soft dependencies. The best bet so far
is still WAPBL. It's a bit slower than async mounts, but as they are
VERY unsafe, that's not recommended, at all. Use WAPBL!
[Tags: journaling, wapbl]
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